Typewriter attachment



1'. M. 'SCHULTL TYREWRTTER ATTACHMENT. APPLICATION FILED IULY 9,1919.

3 SHEETS-SHEET l.

1,423,637. Patented July 25, 1922.

254 wfg? J. M. SCHULTZ,

TYPEWRITER ATTACHMENT.

APPLICATION F|LED1ULY 9,1919.

1,428,687, Patented July Z5, 1922.

3 SHEETS-SHEET 2.

.Eg l n Wigan! 1. M. scHuLTz.

TYPEWRITER ATTACHMENT. `APPLICATION FILED JULY 9,19l9.`

muted July25, 1922.

3 SHEETS-SHEET 3.

narran stares JOHN M. SCHULTZyOF CHICAGO, ILLINOIS, ASSGNOR, BY DIRECT .AND MESN'E ASSIGN= MENTS, TO lTOEN S. CHENNEOUR, 0F CHCAGO, ILLINOIS.

TENT FFQE. n

To @ZZ whom t may concern.' l

Ee it known that JOHN M. SoHUL'rz, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful improvements in a Typewriter Attachment, of which the following is a description. Y

My invention belongs to that general class of devices known as typewriter attachments, and relates particularly to an attachment to be placed on the shift key bar of typewriters to lock the bar in a positionwhereby the machine will write caps.` The same is shown as'applicable for use on Underwood typewriters to replace a small lever used on the old types of machines, thereby making the machine up to date so that a locking key may be depressed to shift and lock the machine and cause the writing of capitals, and the shift lever key on the opposite side of the machine upon being depressed will automatically release the device. The invention has among its objects thel production of a device of the kind described that is simple, convenient, durable, efficient and satisfactory for use wherever found applicable. Many other objects and advantages of the construction herein shown and described will be obvious to those skilled inthe art from the disclosure herein given.

To this vend my. invention consists in the novel construction, arrangement and combination of parts herein shown and described, and more particularly pointed out in the claims.

In the drawings, .wherein like reference characters indicate `like or corresponding parts, C

Fig. l is a view illustrating the application of the device to an Underwood machine, a portion of the machine being shown;

Fig. 2 is a plan view of the two shift keys with my device applied to one of the bars thereof; y

`Fig.- 3 is a side elevation` ofmy device, a portion of one of theshift bars, together with the locking member;

F ig. 4- is a similar View showing the device in operation;

Fig. 5 is a plan view of the same;

Fig. 6 is a sectional view taken substantially on line 6 6 of Fig. 3;

Fig. 7 is a perspective view of my attachment, the spring and fasteningy means not shown;

Specification ofiLett-ers Patent. Pat-@ntgd JU y 25, kApplication led July 9, 19179. Serial No. 309,708.

Fig. 8 is aplan `view ofthe shift lever at the oppositeside of the machine.;

Fig. 9 is a side elevation of the saine looking on line 9?-9 of Figure 8;

Fig.' l0 is a perspective view showing the two shift levers or bars with my device attached thereto; and

F ig. ll is a sectional view taken substantially on line ll-ll of Fig. 9.

`Referring to the drawings, l represents one of the shift levers provided with an operating key 2, and 3 the other lever provided with an operating key 4t, it being understood that either one of the keys are depressed, the platen is raised or the machine so controlled that capitals will be struck in place of small letters. In the older machines, for example the old type of Underwood machines serially numbered less than' eight hundred thousand, a lever is provided for locking the shifting mechanism to print capitals,'but frequently, and in fact in many cases, thepurpose of this lever is not understood, and whenk so understood the same is inconvenient to use and is not always accurately set to perform the functions.` `My device is an attachment to be placed on machines in lieu of the lever heretofore used, which attachment will have a locking key, the use of which will be readily understood, which will serve to control the lock latch so that the same may be operated to lock the machine to print capitals and prevent its being unlocked in case of the accidental operationof the shift key ad- Iia'cent thereto, but which will permit the release of the shifting mechanism upon the operation of the shift key at the opposite side of the machine. In order that the application of the same may be understood, it may be stated that 5 represents a pin or lug on the lever l, the same arranged to coopr`and arm l0 secured thereto, and a cooperating pin l2 on the shift lever ,arm 3, and this part of the mechanism do not change. My attachment consists of a part 15 which may be tern'ied a lock bar or lever, whichy same is also formed with a hole `17 so that the same may be secured by a screw bolt l or the equivalent to the arm `l,it being necessary, however, in the type of machine referred to, to bore a hole in the lever l. lvlember provided with an` upwardly eiitending part 19" which is formed with a flange 20, having faces 2l and 22. The face 2l is arranged to cooperate with ,the face 9 and the latch 6, and the face 22 with the upperedge 26 of the latch, as will be more fully understood from the description of the operation of the device. In applying the device, the old, attachmentis removed from the machine and a hole drilled in the lever l for the screw 18,A and4 a hole preferably drilled at `25 for engagement or securing of the spring 23, and the opposite end of eachY is secured at hole 24 to the lock arm or lever l5. y l. y i

- In Fig. l is illustrated one form of mechanism `between the platen and shift key. Referring to this figurdthe lever l is supported at` 28, the same being provided with an arm 29 arrangedto cooperate with arm pivotally secured at 32, the same being operatively connected so as towmanipulate the Aplaten Obviously as the shift key at either side of the machine is manipulated,

the platen 33 is controlled..

The operation of the device may be briefly describedV as follows; As thel keyl2 iswdepressed, the saine shifts the platen to write caps, and at the same time the pin 5 moves downthe face 9, but owing-to theengajgement `of face 2l on flange 20 with the face 9, as shown inFig. 3 by the dotted lines, the latch or 'lock 6 `is,maintainedv outof operation.V lf it is desired to shiftmand lock kthe platen or other mechanism, key 16 'is depressed, this not only depressingleijrer `1lout itraises the .flange 2O so that thel pin 5 rides down the edge 9- and is engaged at `8, face 22 of 'the 'flange rides over the top 26 ofthe latclnras indicated in Fig. This locks the latch in place iand prevents the same being released hymanipulating key Vor key 16. The pin 5 will be engaged by the latch 6 until key l isdepressedwVVhen lrey lis depressed, however, pin12 cooperating with the farm l0, roclrs` shaft and with it the latch 6, so that 'pin 5 is disengaged andthe shaft arm raised under thepressure of the weight of the mechanism 'and such other means as may` be provided, not ,considered necessary to `describe in, detail herein.` .ris is obvious, as soon Vasthe latch 6 is dropped out of engagement, it tends to rock member 15 on its pivotal connection 18, this movement being kpermitted as the same is only maintained in position by the leased,.flange 2O returns to the position substantially as shown in Fig. 3, so that the shift key 2 may be used until such time as key 16 is again depressed, locking the mechanism in the shifted position.

, Having thus described my invention, it is obvious that various immaterial modifr cations may be made inthe same without departing from th'espirit of my invention; h nce l'do not wish to be understood as 'l l myself to the exact form, construction. arrangement and combination of parts herein shown anddescribed, or uses mentioned. x .p

"What I claim as new and desire to secureby Letters Patent is: p y

l.. In a typewritin'g `achine, a platen shift lever .having a pin projecting from oneside thereof, a rocking lock lever pivotallyY mounted on said shift leve-r having an integral extension projecting at righta'ngles thereto, a `finger key connected with said lever, a pivoted latch Ilever, said vright angle extension portion of the lock'lever being adapted to normally prevent.l locking cooperation between said pin and pivoted latch lever, but adapted upon the actuation of said lever to` be moved rearwardly from said pin slidably on the upper `portion of theflatch levertoua position to permit a por p on "ofa the latch to ride "over and engage said pin, 'saidfangle extension of said lool; lever directly engaging the upper surface of they latch yleverfwhenl the same cooperates with "the into `hold the latch lever in locked position. i i M 2. lnK a typewritingmachine, the combination with a platenfshift leverhaving a projection extendihn therefrom. a locking lever pivotally,mounted on said shift leverhaving` an upstandingportion `provided with an integral rightI anglefextension, and a cutout portion arranged at the forward edge of'said locking lever, a pivoted latch lever mounted adj said vpin and having a forwardly extending latch face, said exteijision l.olrthe lock lever being adapted 'to normallyengage, projection. andupon a lshifting Iof the lock lever to move rearwardly, from the projectionjto permits-aid projection to beengaged by the under side of the latch surface of saidlatch' lever said right angle extension directly engaging with the upper face on the latch lever to retain the same in a latched position. I i

y,In testimony whereof, l; have hereunto signed name inthe presence of two subscribing witnesses. l

i Tori-N M. sCnULTZ.

Witnesses;

RoiY YV, HILL, CHARLES I. COBB.

llt; 

